It looks like the second time is a charm for the Alert Ready system in Ontario.
The alert went off at 1:55pm today on most cell phones, televisions and radios in Canada as the system underwent a second round of testing.
Provincial emergency management organizations conduct simultaneous public alerting tests across the country in a bid to make sure people receive emergency alerts and can take action to stay safe.
Test alerts were supposed to appear on updated and compatible mobile devices connected to an LTE wireless network at 1:55 p.m. local time, with the exception of Quebec where the test will be done an hour later.
This second test comes after Manitoba Infrastructure's Emergency Measures Organizations said only 60 per cent of wireless users received an alert in a test of the system in May.
The first test didn't sound at all in Quebec due to a coding error, which the system operator said was fixed within a couple of hours.
In Ontario, some test alerts were heard and felt on mobile devices, but many wireless subscribers didn't receive any signals.